1.2738
40CrMnNiMo 8-6 -4/AISI: P20+Ni
Delivery Method : Hardened and tempered 280-325 HB
Uses :It is the most preferred material to be used in plastic molds. It provides great advantage to the user during use due to its homogeneous hardness distribution and high surface gloss after heat treatment. There are wide usage areas such as television body, car bumper, plastic container molds in all sizes in large-sized plastic molds. It is suitable to harden the surface by nitration process.
*Time interval varying depending on the section.
Delivery Method : Hardened and tempered 280-325 HB
Uses :It is the most preferred material to be used in plastic molds. It provides great advantage to the user during use due to its homogeneous hardness distribution and high surface gloss after heat treatment. There are wide usage areas such as television body, car bumper, plastic container molds in all sizes in large-sized plastic molds. It is suitable to harden the surface by nitration process.
| Chemical Composition (%) | C | Si | Mn | Cr | Mo | Ni |
| % Average | 0,40 | 0,30 | 1,45 | 1,90 | 0,20 | 1,00 |
| DIN Analysis | 0,35-0,45 | 0,20-0,40 | 1,30-1,60 | 1,80-2,10 | 0,15-0,25 | 0,90-1,20 |
| Thermal Conductivity ( W/ m.K ) | 20°C | 350°C | 700°C |
| 34,5 | 33,5 | 32,0 |
| HEAT TREATMENT DATA | |||
| Temperature (°C) | Time (Saat) | Cooling Environment | |
| Softening Annealing | 710-740 | 2-5* | Baked |
| Stress Relieving | 550-600 | 2* | Baked |
| Hardening | 840-870 | - | Oil, hot bath 180-220°C |
| Tempering | 600-680 | 1 hour for every 20 mm | Air |
*Time interval varying depending on the section.